Fraction of recovered sources as a function of the curvature detection threshold. The various panels report the results for the different sources peak flux used as displayed. The full line is used for the total recovery fraction; the dashed and the dash-dotted lines are the fraction of sources for which the recovered peak flux and integrated flux, respectively, are within 30% of the input value. The triple-dot-dashed line represents the fraction of false positives over the number of input stars.